/*
 *   Copyright (c) 2013 Mike Heath.  All rights reserved.
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
 */
package nats.client;

/**
 * Interface to listen for server connection state change events.
 *
 * @author Mike Heath
 */
public interface ConnectionStateListener {

	enum State {
		/**
		 * Connection to the server has been made.
		 */
		CONNECTED,
		/**
		 * Authentication, if necessary, has been completed.
		 */
		SERVER_READY,
		/**
		 * The connection was closed.
		 */
		DISCONNECTED
	}

	void onConnectionStateChange(Nats nats, State state);

}
